//スクロールコントロール-------


/* USER_AGENT check start ------------------------------------------------ */
// NN4, NN5(Netscape 6+, Mozilla 1+?), IE4(IE4+), Unknown
g_USER_AGENT = getAgent();

// return NN4, NN5(Netscape 6+, Mozilla 1+?), IE4, IE5(IE5+), Unknown
function getAgent(){
  var userAgent = navigator.userAgent;
  var charIndex;
  var majorVersion;

  charIndex = userAgent.indexOf("MSIE");
  if(charIndex){
    majorVersion = userAgent.charAt(charIndex + 4 + 1);
    if(majorVersion > 4){
      return("IE5");
    }
    else if(majorVersion == 4){
      return("IE4");
    }
  }

  charIndex = userAgent.indexOf("Mozilla");
  majorVersion = userAgent.charAt(charIndex + 7 + 1);
  if(majorVersion > 4){
    return("NN5");
  }
  else if(majorVersion == 4){
    return("NN4");
  }

  return("Unknown");
}
/* USER_AGENT check end -------------------------------------------------- */

function getWindowYOffset(){
  if(g_USER_AGENT == "IE5" || g_USER_AGENT == "IE4"){
    return document.body.scrollTop;
  }else if(g_USER_AGENT == "NN5" || g_USER_AGENT == "NN4"){
    return window.pageYOffset;
  }else{
    return 0;
  }
}

var waitTimer;
function jumpTo(dstY, srcY, scrollRate, waitMillSec) {
  if(waitTimer){
    clearTimeout(waitTimer);
  }
  if( ! dstY || dstY < 0 ){
    dstY = 0;
  }
  if( ! srcY ){
    srcY = 0 + getWindowYOffset();
  }
  if( ! scrollRate ){
    scrollRate = 5;
  }
  if( ! waitMillSec ){
    waitMillSec = 20;
  }

  srcY += (dstY - getWindowYOffset()) / scrollRate;
  if(srcY < 0){
    srcY = 0;
  }
  posY = Math.floor(srcY);
  window.scrollTo(0, posY);

  if(posY != dstY){
    waitTimer = setTimeout("jumpTo("+ dstY +", "+ srcY +", "+ scrollRate +", "+ waitMillSec +")", waitMillSec);
  }
  else if(posY == dstY){
    clearTimeout(waitTimer);
  }
  else if(posY < 1){
    window.scroll(0, 0);
  }
}

function toTop(){
  jumpTo(0, 0, 7, 14);
}





//ロールオーバー-------

/*

	Standards Compliant Rollover Script

	Author : Daniel Nolan

	http://www.bleedingego.co.uk/webdev.php

*/



function initRollovers() {

	if (!document.getElementById) return

	

	var aPreLoad = new Array();

	var sTempSrc;

	var aImages = document.getElementsByTagName('img');



	for (var i = 0; i < aImages.length; i++) {		

		if (aImages[i].className == 'clickable') {

			var src = aImages[i].getAttribute('src');

			var ftype = src.substring(src.lastIndexOf('.'), src.length);

			var hsrc = src.replace(ftype, '_o'+ftype);



			aImages[i].setAttribute('hsrc', hsrc);

			

			aPreLoad[i] = new Image();

			aPreLoad[i].src = hsrc;

			

			aImages[i].onmouseover = function() {
				
				sTempSrc = this.getAttribute('src');

				this.setAttribute('src', this.getAttribute('hsrc'));

			}	

			

			aImages[i].onmouseout = function() {

				if (!sTempSrc) sTempSrc = this.getAttribute('src').replace('_o'+ftype, ftype);

				this.setAttribute('src', sTempSrc);

			}

		}

	}

}



window.onload = initRollovers;